Electric water heater



. J. HAMMERS ELECTRIC WATER HEATER :ma/'fm' ill Filed Aug. 25. 192e Jan. 17, 1928.

lrwnor J. Hammers 'mmm Danno Baco .Patented .lei-i., 1.7, 1928.

@were Anrinofrnrc waren Human.

a. iranienne? or` eli-Aun narrns, rarer-Ireen.

iflmilication Ic-d. August 23, 1926. Serial No. 130,677.

.This'invention relates to an elect-ric water heater. f t is an'object and purpose'ot the present invention to provide a heater for water wherein heat niay he supplied to the water through an electric agency wherein a short circuited secondary winding has electric currents induced therein by reason of its proximity, location and coupling with respect' to prirnary Ywindings and the cores around which they arelocated and by reason of the current induced, said secondary short circuited winding is heated to'a'high degree of temperature. "Through this short circuited :winding the-water lcirculatesand absorbs the heat thus'produced whereby the water is heated to va high'teniperature. Y

further object of the invention is to provide a' construction of this character which is of relatively simple, compactand durable j structure 'and lone which may be very .easily and readily installed in connection ywith the usual and well known vertical water tank largely used for hot water heating purposes. For an understanding of the invention reference'inay be had to the following description taken in connection with the accompanying" drawing, in which Fig; 1 is a side 'elevation of a water tank equipped with theheating unit of my invention.

Fig. 2 is an enlarged vertical sectoin through the heating unit.

Fig. 3 is an enlarged horizontal section therethrough5and l Fig. Il is a fragmentary enlarged vertical section through the central portion 'ofthe heating unit. the plane of the section being at right angles tothe plane of the section shown inv Fig. 2.;

Like referenceV characters refer to like parts in' thediierent ligures' of the drawine'.

The tank 1 for holding the hot water is of usual construction and is supported by the usual standard 2 at its lower end. It is equipped with an inlet pipe 8 at its upper end and also with an outlet pipe e through which the water may be drawn from the tank.

A pipe 5 branches laterally from the outlet pipe 4 and leads to and connects with a cylinder 6 at the upper end thereof. Integrally cast with the vertical cylinder 6 is an inner vertical wall 7 substantially square in cross section, the upper ends of the wall 7 and cylinder G being connected by integrally cast upper and lower ends En thereby making a closed receptacle. Between the wall 7 and the cylinder 8 a spiral partition 9 `is located and is cast integral therewith7 the saine being or torin such that water entered at one end of the cylinder 6 follows the partition around the inner wall 7 severaltiines beior'e reaching the opposite end. A pipe 10 is connected at one end at the lower end ot the outer cylinder 6 and at its opposite end is connected with the bottoni o' the tank 1. As will hereafter be described' the water is heated in the receptacle Inade by the cylinder 6, with inner wall 7 and closed ends 8, circulating through the'saine as iinpelled by the spiral partition 9, the water passing from the lower' end of the tank 1 upwardly through the pipe 10, thence upwardly guided by the spiral partition 9 to the upper pipe 5 and thence to the upperend kof the'tank 1 so that water drawn outwardly through the outlet pipe 4 will be or the highest temperature that any portion of the water in the tank has attained. f

` Across the upper end of the water heating receptacle a section of a core 11 is placed. This core is made up of a plurality ot' laminations riveted or otherwise securely fastened together'and depending Jfrom which is a central leg 12' and two end legs 13. rl`hc leg 12 passes into' the upper end of the space surrounded by the wall -7 and extends' substantially halfway therethrough. A similar core -lla'rnade up ot a'pluralit-y ,oli laminations is located across the lower end of t-he water heating receptacle and similarly has a-central upwardly extending leg 12l and two end legs,13.,the leg 1Qn extending into the lower end vof the space surrounded by the: wal-i7 and vatits upper end abutting against the lower end or the leg 12; while the legs 13a abut at their upper ends against the lower ends or the legs 13. as best shown in Fig. 2. Around those portions of the core formed of the abutting legs 18 and 13a coils lll are placed. These coils ina-y be considered primary coils and through them an alternating electric current is designed to be passed. The coils are spaced a shortdistance from the outer sides of the cylinder 6. Two clamping rings 15 are located around the tank 1 in spaced apart relation, each at ieine side carrying an outwardly extending arm 16, the upper one of which seats in a recess cut in the upper side ot the core 1l while the lower seats ina corresponding recesscut inthe lower side of the core Il?.

`By this meansV the two core sections are maintained in fixed relation with respect to cach other 'Y and to the water heating recep` tacle and serve also to helpl support the unit. Y v Y A Electric current passed through the coils le induces current in the heating receptacle comprised Vof the vcylinder 6 with the inner wall 7, ends 8 and the partition 9. Such induced currents are of high amperageand by reason of the integral structure of this Water heating receptacle are short circuited so that the same fiow through shortfcircuitsthereby causing the production of" a considerable heatin the water heating memberrdescribed.

" the lower end of the tank. Y

claims and is to be considered comprehensive of all forms of. structure coming within their scope. f y

I claim:

l. In combination, auwater heating member formed'with an outer shell, aninner hol-y low wall, and integral ends connecting the ends of said shell and wall, an inlet and an,

outlet at the respective ends of said -water heating member, a core located around said water `lieating'member having a middle 'vertical portion passing through said hollow Wall andv two end vertical :portions parallel with and spaced vfrom the sides of the outer shell, and primary coil-.windings around said end vertical'portions of the core. 2. A water heater comprising afreceptacle having anouter shell, an inner hollow wall extending through and spaced from the shell and integral ends connecting theends of the wall andshelh an `open laminated coie hav-V ing a portion extending through the hollow inner wall of the receptacle, a second portion located parallel to and outside of the shell,

and connecting portions between the said first named portions, and a primary coil winding around said second portionl of the core,V substantially as described.

3. A Vconstruction containing the elements in combination delined in claim 3, combined with an inlet pipe leading into one end of said receptacle, an outlet pipe leading from the other end'there0f,and an integral spiral partition located between the :shell and inner wall leading from one pipe to theother.

- 4. In combination, a vertical water heat- Y ingmember comprisingan outer'shell, an inner'hollow Vertical wall extendingthrough said shell and ends integral with and connecting the ends of the rshell and wall, an inlet andan outlet at the respective endsof said member, av spiral partition between the said shell and wall leading from one of said openings to the other, a core formed of two sections, onevlocated over the upper end .of

said'inember and the other located under thc -lowerend thereof, said cores having inter- Vmediate legs pro]ect1ng.toward each other throughtheopening surrounded by saidinner wall, and end 1 legs extending toward each other at opposite outer sides of the said shell, and primary coil windings around said end legs of the sections of thecore spaced a short distance from the adjacent sides of said outer shell'.

Q5. A construction containing the elements in combination dened in claim 5, combined with a tank located adjacent said water heating member and members attached tothe Y tank and extending one over the upper sec-V tion' ofthe core and the other'under the lower section thereof to thereby support said core sections4 and hold the same together.

In testimony whereof I afiix my signature.-

IVILLIM J. --HAMlVIERST- 

